ASTROSAT CZTI

Data Quality Report

Orbit 28866

Creation date: 2024-06-27T19:57:22.056237
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_123T06_9000004138_28866cztM0_level2.evt modeM0/AS1A10_123T06_9000004138_28866cztM0_level2_quad_clean.evt
Size (bytes)642,291,84085,757,760
Size612.5 MB 81.8 MB
Events in quadrant A3,130,135549,282
Events in quadrant B3,211,193560,579
Events in quadrant C3,458,722538,721
Events in quadrant D9,214,994497,212

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132881
B0134621
C0141671
D0319121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6470711.097372%
B6470761.174652%
C6470811.251932%
D647198815.268119%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7200 6470 1 1 0.01% 0.02%
B 7200 6470 4 4 0.06% 0.06%
C 7200 6470 0 0 0.00% 0.00%
D 7201 6471 1030 1030 14.30% 15.92%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 1 113 46678 287.79 789 775 159.5
A 14 235 33142 202.92 789 775 159.5
A 13 254 11786 69.03 789 775 159.5
B 10 245 32619 213.51 783 765 149.2
B 10 246 28965 189.02 783 765 149.2
B 15 35 23070 149.51 783 765 149.2
C 3 233 380180 2167.8 749 754 175.0
C 14 238 126368 717.68 749 754 175.0
C 4 254 28443 158.2 749 754 175.0
D 8 195 6160881 34811.12 738 716 177.0
D 1 52 139827 786.12 738 716 177.0
D 7 80 72763 407.14 738 716 177.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter